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( )—________
—I'm fine.
| A．How are you? | B．How is Sam? | C．How is Amy? |
( )—________
—Bye!
| A．Hello! | B．Hi! | C．Goodbye! |
( )—________
—Good morning!
| A．I'm Sam. | B．I'm fine. | C．Good morning! |
( )—________
—Hello, I'm Daming!
| A．Good morning! | B．Hello, I'm Lingling! | C．How are you? |
( )—How are you?
—________
| A．I'm not fine. | B．Goodbye! | C．How are you? |
同类型试题
y = sin x， x∈R， y∈[–1，1]，周期为2π，函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x， x∈[–1，1]， y∈[–π/2，π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x， x∈R， y∈[–1，1]，周期为2π，函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x， x∈[–1，1]， y∈[–π/2，π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
